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Finding the Fourth Proportional to 136,654.16, 188,624.76 and 80,083.76

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Solution

The fourth proportional to 136,654.16, 188,624.76 and 80,083.76 is: 110,540.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,654.16 : 188,624.76 = 80,083.76 : x
  2. Step 2: Convert to fraction form
    136,654.16/188,624.76 = 80,083.76/x
  3. Step 3: Cross multiply
    136,654.16x = 188,624.76 × 80,083.76
  4. Step 4: Simplify right side
    136,654.16x = 15,105,780,009.90
  5. Step 5: Solve for x
    x = 15,105,780,009.90/136,654.16
  6. Step 6: Final answer
    x = 110,540.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.